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Finding the Fourth Proportional to 326,880.40, 490,223.40 and 127,085.80

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Solution

The fourth proportional to 326,880.40, 490,223.40 and 127,085.80 is: 190,590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,880.40 : 490,223.40 = 127,085.80 : x
  2. Step 2: Convert to fraction form
    326,880.40/490,223.40 = 127,085.80/x
  3. Step 3: Cross multiply
    326,880.40x = 490,223.40 × 127,085.80
  4. Step 4: Simplify right side
    326,880.40x = 62,300,432,967.72
  5. Step 5: Solve for x
    x = 62,300,432,967.72/326,880.40
  6. Step 6: Final answer
    x = 190,590.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.